On Thu, Jun 27, 2013 at 01:16:44PM +0200, Urs Thuermann wrote: > My ISP provides a single, dynamic IPv4 address to me. I have > configured several tunnels, IPv4 in IPv4 and IPv6 in IPv4, to several > sites. This is running on a very old Linux installation and I want to > move that to a Debian system. > > I know how to set up /etc/network/interfaces for such tunnels if the > IPv4 address is static. However, with dynamic IPv4 address you do not > only needed ifup <tunnel> and ifdown <tunnel> but also a way to update > the remote tunnel configuration when the local IPv4 address changes. > E.g. for Hurricane Electric tunnel broker you access a certain URL > (using e.g. wget) where the URL encodes your current IPv4 address. At > another site I need to execute a command using ssh. > > I know how I can do that using cron and/or pppd configs. But I'd like > to know if Debian has some standard way to update tunnel configs, > preferrably in /etc/network/interfaces with the rest of the interface > definition.
If the local address only changes on ifup/ifdown, then you can add a preup or postup command to each interface that will run an arbitrary command. If the local address is controlled by a DHCP client, consult your DHCP client's man pages for a script that can be run post-change. -dsr- -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected] Archive: http://lists.debian.org/[email protected]
